MESON Chess Problem Database

Problem Display
PID: 172245 (6k1/3P2p1/5bK1/7Q/8/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kubanski krai, 1996

6k1/3P2p1/5bK1/7Q/8/8/8/8

#2

3 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.d8Q#
      • 2.d8R#
    • 1...Bb2
      • 2.d8Q#
      • 2.d8R#
    • 1...Bc3
      • 2.d8Q#
      • 2.d8R#
    • 1...Bd4
      • 2.d8Q#
      • 2.d8R#
    • 1...Be5
      • 2.d8Q#
      • 2.d8R#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qe8#
      • 1...Kf8
        • 2.Qe8#
      • 1...Kh8
        • 2.Qe8#
      • 1...Be5
        • 2.d8Q#
        • 2.d8R#
      • 1...Be7!
    • 1.Qd5+?
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qe8#
      • 1...Kf8
        • 2.Qe8#
      • 1...Kh8
        • 2.Qe8#
      • 1...Bxe5
        • 2.d8Q#
        • 2.d8R#
      • 1...Be7
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::P=Q
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
        • K(c);P-FLIGHT::QAR(A)
        • B(a);N_GUARD::P=Q
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(c);P-FLIGHT::QAR1(A)
      • K(c);P-FLIGHT::QAR(A)
      • B(a);N_GUARD,XQ(A)::P=Q
      • B(a);OGATE::QAR1(A),XP(b)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).